FEATURES:
My music returns: Any song from a series can be used on any stage from that series.
Nearly 900 tracks
Separate jukebox mode w/playlists, can become "mp3 player" of sorts in handheld mode w/screen off
Can save custom rulesets, rules chosen before stages chosen before characters chosen
Stamina now a standard option like Time or Stock
Sudden Death zooms in continually
FS meter: Maxing it out allows a weaker version of FS (multiplayer only, probably not 1v1?)
Squad Strike mode (MvC style or team)
Tourney mode back (32P max)
Smashdown (used fighters vanish after each fight)
Graph paper training mode stage
Classic: Each character has specific opponent sequence

COMMENTS:
Kind of annoyed that there are now more FE characters (7) than LoZ characters (6), & they're literally ALL sword users, with 4 of them all based on the same core (Marth, Echo Marth, Fire Marth, Echo Fire Marth).
Also not happy that your Classic opponents are fixed per character. I thought we left that crud behind after the N64 game.
Everything else is pretty awesome.

Honestly super psyched about the Castlevania reveal, I had it spoiled for my yesterday via some leaks but the trailer still got my hyped for it. Only problem; NO GIANT BAT. How could they forget Giant Bat? It's okay, Flea Man being in Smash makes up for it tenfold. I'm probably only ever going to play as Richter though.

K. Rool was a fun addition, too, one that I called happening right after the Ridley reveal. There was no way they wouldn't add him. Now all they need to do is add Waluigi and the trifecta of most-requested Smash inclusions will be complete.

Chrom is cool, but not as cool as Dark Samus.

The menu looks sooo much better than the absolutely god-awful Smash 4 menu. My only problem with that is that it still says "Games & More" for one of the selections. WHY DOES IT HAVE TO BE SO VAGUE. Oh well - the blurred out menu option has me excited because I keep thinking it'll be a new story mode. I hope so badly that it is.

Also not happy that your Classic opponents are fixed per character. I thought we left that crud behind after the N64 game.

Spoiler.

i dont know what you're on about, having matchups tailor-made to the character you're playing and giving context to them is actually really cool. besides this game's gonna have like 80 characters; you're not playing classic more than once for most of these characters anyway.

Also not happy that your Classic opponents are fixed per character. I thought we left that crud behind after the N64 game.

Spoiler.

i dont know what you're on about, having matchups tailor-made to the character you're playing and giving context to them is actually really cool. besides this game's gonna have like 80 characters; you're not playing classic more than once for most of these characters anyway.

I agree with what you guys are saying, it would be cool if FE got more diverse representation. But Lucina is an echo fighter of Marth, while Chrom is an echo fighter of Roy. Then there’s Ike. Then, meanwhile, Corrin has a lance and Robin has magic, so the “only sword users” thing doesn’t really make much sense to me.

I’m not even that big into FE, but the current roster seems just fine to me. I mean yeah, having Hector with his axe would be cool, but is it that big of a deal?